Hi elapid95,
The support system under the mattress wouldn’t affect the performance of the gel memory foam itself and for most people it wouldn’t affect sleeping temperature because it’s too far away from the body for any additional airflow to have much effect on sleeping temperature. The airflow under the mattress is more directly connected to the risk of mold and mildew issues than sleeping temperature. It’s also possible that a support surface that has no flex (compared to a support system that has more flex) is forcing a little more of the compression to the top of the mattress which could have a small effect on temperature. While most people probably wouldn’t have temperature issues with this mattress regardless of the support surface, the temperature sensitivity and physiology of the person themselves is one of the biggest factors in how warm a mattress sleeps (along with the other variables mentioned in post #2 here) and since anything is possible … personal experience always “trumps” theory.
Anything that is used on top of memory foam will reduce the amount of body heat that reaches the memory foam and can affect how much it softens under pressure which can sometimes have a significant effect on the feel and performance of the mattress. It will add a little more resilience to the sleeping surface and some additional softness (depending on how soft and thick the topper is) which will have a combined effect with how much it firms up the memory foam underneath. The only way to know how it affects your sleeping temperature though would be to try it and see how it affects your actual sleeping experience
Phoenix
Note Added Later: To elapid95
I got your message…No problem! I will proceed with deleting your old posts as per your request.
Phoenix